{
  "manageEntity": {
    "action": "Save",
    "entityId": "1014717395",
    "entityType": "Track",
    "nonce": "0x01ba9f07597d9dc5bc48584eb1de19092aee45968dcd6ccc2f7061f9ecefa335",
    "signature": "0x3f48971b45a371f808947b7584bce80488a2f0be59ba39371cdead884a934a2b33a55a153fb4f5dbd04490820efe75137f42fbbfad46b6a1c963039757febb351b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}